<?php
/**
 *
 * @author kavin
 * $this->union($alias, array('union.siderbars','postlist'), array('data'=> $data));
 */
class Union extends Item{

	private $data;
	public function __construct($params){
		parent::__construct();
		$this->data = $params;  //diff from item's $this->params

	}

	public function layout(){
		return $this->content();
	}

}